The ability for a total cunt to act friendly around people, such as her boyfriend's friends. Very possibly related to the succubus.
Man, she seems really friendly, but I think she's really good at cunt masking, Larry is always complaining about her.
the act of a woman sitting on your face
Guy: Damn bitch I almost suffocated last night during that cunt masking
Girl: I told you two taps on my ass if you wanted to stop
Guy: Don't worry, I'll use a snorkel next time